Gas Canisters
Camping & Climbing · 9 specs
Direct Answer
Portable camping gas canisters are certified under European standard EN 417 and US DOT-2P/2Q specifications. The international outdoor standard is the threaded Lindal B188 self-sealing valve featuring a 7/16"-28 UNEF thread (used by MSR, Jetboil, Primus, Snow Peak in 100g, 230g, and 450g sizes). The fuel mixture is typically an 80/20 or 70/30 Isobutane/Propane blend (with boiling points of -11.7 °C and -42 °C) to ensure vapor pressure in cold mountain conditions.
Source: EN 417 (Non-refillable metallic gas cartridges for liquefied petroleum gases) / US DOT-2P & DOT-2Q · Last reviewed Aug 28, 2026
Specs
| Valve Thread Standard | 7/16-28 UNEF (Lindal B188 Self-Sealing Valve) EN 417 Standard |
| Standard Small Canister Mass (100g) | 100.0 / ~198.0 g fuel / gross weight (fits inside 1L cookpots) |
| Standard Medium Canister Mass (230g) | 230.0 / ~380.0 g fuel / gross weight (standard backpacking size) |
| Standard Large Canister Mass (450g) | 450.0 / ~660.0 g fuel / gross weight (basecamp size) |
| Premium Fuel Blend Ratio | 80% Isobutane / 20% Propane 4-Season Fuel |
| Propane Boiling Point | -42.1 °C (-43.8 °F / delivers high vapor pressure) |
| Isobutane Boiling Point | -11.7 °C (10.9 °F / superior to n-butane at -0.5 °C) |
| Safety Burst Pressure Standard | ≥ 17.5 bar (254 psi DOT-2P / 19.3 bar DOT-2Q) |
| Piercable Canister Standard | EN 417 Type 200 (190g non-threaded pierceable canister) Legacy / European Campingaz |
The Lindal B188 Thread & Cold-Weather Isobutane Physics
- 7/16" UNEF Lindal B188 Thread: The universal screw-on valve features an internal spring-loaded pin that opens only when screwed completely onto a stove burner regulator, allowing leak-free disconnection between uses.
- Cold-Weather Vapor Pressure Failure: Standard n-butane stops vaporizing near 0 °C (32 °F). Premium alpine cartridges use branched-chain isobutane (boiling point -11.7 °C) blended with 20–30% propane (boiling point -42 °C) to maintain internal canister vapor pressure down to sub-freezing temperatures.